Start by preheating your oven to 325°F (160°C). While that's warming up, grab your 8×8 inch baking pan. I recommend lightly greasing it and then lining it with parchment paper..

Now in a mixing bowl, combine your dry ingredients: cocoa powder, flour, and salt. Give everything a good whisk so it’s all nicely blended.

In a clean bowl, whip the eggs, then stir in the granulated and brown sugars, oil, mashed avocado, and vanilla extract. Stir until the mixture is smooth and kind of glossy.

Then, carefully incorporate the dry ingredients into the wet mixture. I usually go slow here, just mix until everything is combined. The batter will be thick and a little fudgy, and that’s exactly what you want.

Once that’s mixed, fold in your dark chocolate chunks. I like to keep some aside to sprinkle over the batter just before it goes in the oven.

Now pour the batter into your prepped pan and smooth out the top so it bakes evenly. Bake it in the oven for about 45 to 55 minutes until it’s ready.